Pedicle Screw-Based Dynamic Stabilization Devices in the Lumbar Spine: Biomechanical Concepts, Technologies, Classification, and Clinical Results

May 4, 2017 by in ORTHOPEDIC Comments Off on Pedicle Screw-Based Dynamic Stabilization Devices in the Lumbar Spine: Biomechanical Concepts, Technologies, Classification, and Clinical Results

Fig. 43.1 Classification of spinal motion preservation technologies Pedicle screw-based PDS systems have an advantage over total disk replacement in that they are based on techniques familiar to surgeons who…

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Imaging of Degenerative Disk Disease

May 4, 2017 by in ORTHOPEDIC Comments Off on Imaging of Degenerative Disk Disease

Fig. 7.1 Focal degenerative disk disease at L5-S1 level. Lateral radiograph shows isolated height loss of L5-S1 disk with anterior osteophytes (arrow) Osteophytes are bony projections that develop along vertebral…

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Diskography

May 4, 2017 by in ORTHOPEDIC Comments Off on Diskography

Fig. 8.1 AP view of the lumbar spine. Target disk is at L2–L3. Closed white arrow indicates superior end plate of L3 parallel to the X-ray beam Fig. 8.2 Right…

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Lumbar Spine Injections: An Evidence-Based Review

May 4, 2017 by in ORTHOPEDIC Comments Off on Lumbar Spine Injections: An Evidence-Based Review

Fig. 33.1 Needle enter right L5/S1 zygapophyseal joint Fig. 33.2 L5/S1 zygapophyseal joint injection with intra-articular contrast 33.2.5 Medial Branch Blocks Fluoroscopic imaging, starting with an AP view and transitioning…

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Posterior Impaction Osteotomy for Correction of Sagittal Imbalance in Iatrogenic Flat Back: Surgical Technique

May 4, 2017 by in ORTHOPEDIC Comments Off on Posterior Impaction Osteotomy for Correction of Sagittal Imbalance in Iatrogenic Flat Back: Surgical Technique

Fig. 49.1 Clinical presentation of a sagittal and coronal imbalance Radiological assessment of sagittal balance (Fig. 49.2a, b) is performed using full-length lateral radiography, measuring spinal parameters such as lordosis,…

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